659346491 has 4 divisors (see below), whose sum is σ = 659491392. Its totient is φ = 659201592.

The previous prime is 659346487. The next prime is 659346517. The reversal of 659346491 is 194643956.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 659346491 - 2² = 659346487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (659346421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65396 + ... + 74801.

It is an arithmetic number, because the mean of its divisors is an integer number (164872848).

Almost surely, 2^659346491 is an apocalyptic number.

659346491 is a deficient number, since it is larger than the sum of its proper divisors (144901).

659346491 is a wasteful number, since it uses less digits than its factorization.

659346491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144900.

The product of its digits is 699840, while the sum is 47.

The square root of 659346491 is about 25677.7431056547. The cubic root of 659346491 is about 870.3713088948.

The spelling of 659346491 in words is "six hundred fifty-nine million, three hundred forty-six thousand, four hundred ninety-one".